CVE-2002-2208: Extended Interior Gateway Routing Protocol (EIGRP), as implemented in Cisco IOS 11.3 through 12.2 and other pr

This month

HIGH 7.8DOWNGRADEMITIGATE

CVE-2002-2208 is a high-severity flaw (CVSS 7.8) affecting extended interior gateway routing protocol, ios. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Extended Interior Gateway Routing Protocol (EIGRP), as implemented in Cisco IOS 11.3 through 12.2 and other products, allows remote attackers to cause a denial of service (flood) by sending a large number of spoofed EIGRP neighbor announcements, which results in an ARP storm on the local network.

Why this priority

High severity
EPSS top 9%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
EPSS exploit chance	4.3% (top 9%)
CISA exploited list	No
Published	2002-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: cisco · extended interior gateway routing protocol

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2002-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:00 UTCUpdated Record last modified

extended interior gateway routing protocol extended interior gateway routing protocol DOWNGRADE

Affected: 1.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2

1. Check installed version

apt-cache policy extended-interior-gateway-routing-protocol || rpm -q extended-interior-gateway-routing-protocol || extended-interior-gateway-routing-protocol --version

2. No fixed release: DOWNGRADE to a release before 1.2 (Debian / Ubuntu)

apt-cache madison extended-interior-gateway-routing-protocol sudo apt install extended-interior-gateway-routing-protocol=<VERSION_BEFORE_1.2> sudo apt-mark hold extended-interior-gateway-routing-protocol

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list extended-interior-gateway-routing-protocol sudo dnf downgrade extended-interior-gateway-routing-protocol-<VERSION_BEFORE_1.2> sudo dnf versionlock add extended-interior-gateway-routing-protocol

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

cisco ios MITIGATE

Affected: 11.3 · 12.0 · 12.1 · 12.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.3

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2002-2208?

extended interior gateway routing protocol: downgrade or apply the listed mitigation; ios: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2002-2208 being exploited?

CVE-2002-2208 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2002-2208 affect?

CVE-2002-2208 affects extended interior gateway routing protocol, ios. Severity is high (CVSS 7.8). Extended Interior Gateway Routing Protocol (EIGRP), as implemented in Cisco IOS 11.3 through 12.2 and other products, allows remote attackers to cause a denial of service (flood) by sending a large number of spoofed EIGRP neighbor announcem

How urgent is CVE-2002-2208?

Priority 55/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference

Software pages

iOS vulnerabilities · Cisco vulnerabilities

References

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